Lavkesh Lahngir created YARN-3933:

             Summary: Resources(bothe core and memory) are being negative
                 Key: YARN-3933
             Project: Hadoop YARN
          Issue Type: Bug
            Reporter: Lavkesh Lahngir
            Assignee: Lavkesh Lahngir

In our cluster we are seeing available memory and cores being negative. 
Initial inspection:
Scenario no. 1: 
In capacity scheduler the method allocateContainersToNode() checks if 
there are excess reservation of containers for an application, and they are no 
longer needed then it calls queue.completedContainer() which causes resources 
being negative. And they were never assigned in the first place. 

I am still looking through the code. Can somebody suggest how to simulate 
excess containers assignments ?

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